How do you work out how safe or dangerous a chemical or some other substance is? This week's Risk Bites takes a look at chemical safety, and estimating health risk from chemical exposure. This week's Risk Bites team: David Faulkner (post-production) Andrew Maynard (all the other stuff) Risk Bite
How do you know if the chemicals in the stuff you use and eat are safe? Only a small fraction of the thousands of chemicals in use today have been thoroughly tested for safety. Part of the problem is that how we test chemicals now is slow, expensive, and relies an awful lot on animal testing. How
Sodium reacts with chlorine to form a white salt, sodium chloride. An ionic bond of cations and anions is formed. It is explained how the PSE helps to determine the charges of the ions and to establish the ratio formula from them. Original: "Wolfgang Dukorn" Original: German. All translations in t
Formation of sodium chloride from the elements. The various energies that are applied and released are shown and briefly discussed. An exact quantitative consideration does not take place. Original: "Wolfgang Dukorn" Original: German. All translations in this video have been done by the alugha AI.
Rutherford's atomic model can already explain a simple formation of charged particles (ions). The PSE can help us detect whether an atom absorbs or releases electrons. Original: "Wolfgang Dukorn" Original: German. All translations in this video have been done by the alugha AI.
Large stars die, and then explode into massive supernovae. This scatters all the elements of the periodic table throughout the Universe, which results in the third threshold of complexity -- the creation of chemical elements. Website: https://www.bighistoryproject.com/portal Facebook: https://www.f
Discover how the James Webb Space Telescope will help us better understand solar system formation in this video from NASA. Images from the Hubble Space Telescope show star-forming regions within the Eagle nebula: visible light images show vast clouds of gas and dust, and infrared images provide a gl
The three types of a chemical reaction (analysis, synthesis and conversion) are only presented theoretically! An application and chemical experiments for this take place in the attendance phase at school! Original: "Wolfgang Dukorn" Original: German. All translations in this video have been done b
Learn the basics about testing alkenes with bromine water. Why is bromine water used to test alkenes? What is bromine water made of? Find out more in this video! This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Dee
Buy the Chemical Kit here: http://bit.ly/19wERRM This is the Iodine Clock Reaction, discovered by Hans Heinrich Landolt in 1886. We will explain the chemicals used and how they react with one another. Why does it take so long for the final change to take place. Tune in and find out. Facebook: http
Buy it here: http://amzn.to/17cGEhg Let's observe the effects of Sodium polyacrylate and water. Sodium polyacrylate can absorb it's own weight 300x over making it an amazing chemical to aid in water cleanups. What would you use it for? Facebook: http://facebook.com/HackThePlanet Twitter: http://twi
Chemists always distinguish between the macroscopic and microscopic level. What does that mean? In the experiment zinc reacts with sulphur, this level is attempted to be demonstrated. Original: "Wolfgang Dukorn" Original: German. All translations in this video have been done by the alugha AI.
